iwconfig Look for an interface like wlan0 , wlp2s0 , or wlx00c0ca9abcdef . This is your wireless card. Background services like NetworkManager or wpa_supplicant can block monitor mode. Stop them (without killing your session):
PHY Interface Driver Chipset phy0 wlan0 ath9k Qualcomm Atheros (mac80211 monitor mode vif enabled for [phy0]wlan0 on [phy0]wlan0mon) (mac80211 station mode vif disabled for [phy0]wlan0) Your new interface will be named something like wlan0mon or mon0 . Check the new interface: install airmon-ng
Happy (ethical) hacking. 🔒
Also test packet capture (optional but satisfying): iwconfig Look for an interface like wlan0 ,
sudo airmon-ng start wlan0